1
|
Fais G, Casula M, Sidorowicz A, Manca A, Margarita V, Fiori PL, Pantaleo A, Caboni P, Cao G, Concas A. Cultivation of Chroococcidiopsis thermalis Using Available In Situ Resources to Sustain Life on Mars. Life (Basel) 2024; 14:251. [PMID: 38398760 PMCID: PMC10889959 DOI: 10.3390/life14020251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/06/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
The cultivation of cyanobacteria by exploiting available in situ resources represents a possible way to supply food and oxygen to astronauts during long-term crewed missions on Mars. Here, we evaluated the possibility of cultivating the extremophile cyanobacterium Chroococcidiopsis thermalis CCALA 050 under operating conditions that should occur within a dome hosting a recently patented process to produce nutrients and oxygen on Mars. The medium adopted to cultivate this cyanobacterium, named Martian medium, was obtained using a mixture of regolith leachate and astronauts' urine simulants that would be available in situ resources whose exploitation could reduce the mission payload. The results demonstrated that C. thermalis can grow in such a medium. For producing high biomass, the best medium consisted of specific percentages (40%vol) of Martian medium and a standard medium (60%vol). Biomass produced in such a medium exhibits excellent antioxidant properties and contains significant amounts of pigments. Lipidomic analysis demonstrated that biomass contains strategic lipid classes able to help the astronauts facing the oxidative stress and inflammatory phenomena taking place on Mars. These characteristics suggest that this strain could serve as a valuable nutritional resource for astronauts.
Collapse
Affiliation(s)
- Giacomo Fais
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy; (G.F.); (M.C.); (A.S.); (G.C.)
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Mattia Casula
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy; (G.F.); (M.C.); (A.S.); (G.C.)
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Agnieszka Sidorowicz
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy; (G.F.); (M.C.); (A.S.); (G.C.)
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Alessia Manca
- Department of Biomedical Science, University of Sassari, Viale San Pietro, 07100 Sassari, Italy; (A.M.); (V.M.); (P.L.F.); (A.P.)
| | - Valentina Margarita
- Department of Biomedical Science, University of Sassari, Viale San Pietro, 07100 Sassari, Italy; (A.M.); (V.M.); (P.L.F.); (A.P.)
| | - Pier Luigi Fiori
- Department of Biomedical Science, University of Sassari, Viale San Pietro, 07100 Sassari, Italy; (A.M.); (V.M.); (P.L.F.); (A.P.)
| | - Antonella Pantaleo
- Department of Biomedical Science, University of Sassari, Viale San Pietro, 07100 Sassari, Italy; (A.M.); (V.M.); (P.L.F.); (A.P.)
| | - Pierluigi Caboni
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Cagliari, Italy;
| | - Giacomo Cao
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy; (G.F.); (M.C.); (A.S.); (G.C.)
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Center for Advanced Studies, Research and Development in Sardinia (CRS4), Loc. Piscina Manna, Building 1, 09050 Pula, Italy
| | - Alessandro Concas
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy; (G.F.); (M.C.); (A.S.); (G.C.)
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| |
Collapse
|
2
|
Sidorowicz A, Yigit N, Wicht T, Stöger-Pollach M, Concas A, Orrù R, Cao G, Rupprechter G. Microalgae-derived Co 3O 4 nanomaterials for catalytic CO oxidation. RSC Adv 2024; 14:4575-4586. [PMID: 38318608 PMCID: PMC10839636 DOI: 10.1039/d4ra00343h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 01/30/2024] [Indexed: 02/07/2024] Open
Abstract
Efficient carbon monoxide oxidation is important to reduce its impacts on both human health and the environment. Following a sustainable synthesis route toward new catalysts, nanosized Co3O4 was synthesized based on extracts of microalgae: Spirulina platensis, Chlorella vulgaris, and Haematococcus pluvialis. Using the metabolites in the extract and applying different calcination temperatures (450, 650, 800 °C) led to Co3O4 catalysts with distinctly different properties. The obtained Co3O4 nanomaterials exhibited octahedral, nanosheet, and spherical morphologies with structural defects and surface segregation of phosphorous and potassium, originating from the extracts. The presence of P and K in the oxide nanostructures significantly improved their catalytic CO oxidation activity. When normalized by the specific surface area, the microalgae-derived catalysts exceeded a commercial benchmark catalyst. In situ studies revealed differences in oxygen mobility and carbonate formation during the reaction. The obtained insights may facilitate the development of new synthesis strategies for manufacturing highly active Co3O4 nanocatalysts.
Collapse
Affiliation(s)
- Agnieszka Sidorowicz
- Interdepartmental Centre of Environmental Engineering and Sciences, University of Cagliari 09123 Cagliari Italy
| | - Nevzat Yigit
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC 1060 Vienna Austria
| | - Thomas Wicht
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC 1060 Vienna Austria
| | - Michael Stöger-Pollach
- University Service Center for Transmission Electron Microscopy, TU Wien Wiedner Hauptstr. 8-10 1040 Vienna Austria
| | - Alessandro Concas
- Interdepartmental Centre of Environmental Engineering and Sciences, University of Cagliari 09123 Cagliari Italy
| | - Roberto Orrù
- Interdepartmental Centre of Environmental Engineering and Sciences, University of Cagliari 09123 Cagliari Italy
| | - Giacomo Cao
- Interdepartmental Centre of Environmental Engineering and Sciences, University of Cagliari 09123 Cagliari Italy
| | - Günther Rupprechter
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC 1060 Vienna Austria
| |
Collapse
|
3
|
Sidorowicz A, Fais G, Casula M, Borselli M, Giannaccare G, Locci AM, Lai N, Orrù R, Cao G, Concas A. Nanoparticles from Microalgae and Their Biomedical Applications. Mar Drugs 2023; 21:352. [PMID: 37367677 DOI: 10.3390/md21060352] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/28/2023] Open
Abstract
Over the years, microalgae have been a source of useful compounds mainly used as food and dietary supplements. Recently, microalgae have been used as a source of metabolites that can participate in the synthesis of several nanoparticles through inexpensive and environmentally friendly routes alternative to chemical synthesis. Notably, the occurrence of global health threats focused attention on the microalgae application in the medicinal field. In this review, we report the influence of secondary metabolites from marine and freshwater microalgae and cyanobacteria on the synthesis of nanoparticles that were applied as therapeutics. In addition, the use of isolated compounds on the surface of nanoparticles to combat diseases has also been addressed. Although studies have proven the beneficial effect of high-value bioproducts on microalgae and their potential in medicine, there is still room for understanding their exact role in the human body and translating lab-based research into clinical trials.
Collapse
Affiliation(s)
- Agnieszka Sidorowicz
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Giacomo Fais
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Mattia Casula
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Massimiliano Borselli
- Department of Ophthalmology, University Magna Grecia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - Giuseppe Giannaccare
- Department of Ophthalmology, University Magna Grecia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - Antonio Mario Locci
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Nicola Lai
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Roberto Orrù
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Giacomo Cao
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Alessandro Concas
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| |
Collapse
|
4
|
Sidorowicz A, Margarita V, Fais G, Pantaleo A, Manca A, Concas A, Rappelli P, Fiori PL, Cao G. Characterization of nanomaterials synthesized from Spirulina platensis extract and their potential antifungal activity. PLoS One 2022; 17:e0274753. [PMID: 36112659 PMCID: PMC9481030 DOI: 10.1371/journal.pone.0274753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/05/2022] [Indexed: 11/19/2022] Open
Abstract
Nowadays, fungal infections increase, and the demand of novel antifungal agents is constantly rising. In the present study, silver, titanium dioxide, cobalt (II) hydroxide and cobalt (II,III) oxide nanomaterials have been synthesized from Spirulina platensis extract. The synthesis mechanism has been studied using GCMS and FTIR thus confirming the involvement of secondary metabolites, mainly amines. The obtained products have been analysed using XRD, SEM, TGA and zeta potential techniques. The findings revealed average crystallite size of 15.22 nm with 9.72 nm for oval-shaped silver nanoparticles increasing to 26.01 nm and 24.86 nm after calcination and 4.81 nm for spherical-shaped titanium dioxide nanoparticles which decreased to 4.62 nm after calcination. Nanoflake shape has been observed for cobalt hydroxide nanomaterials and for cobalt (II, III) oxide with crystallite size of 3.52 nm and 13.28 nm, respectively. Silver nanoparticles showed the best thermal and water dispersion stability of all the prepared structures. Once subjected to three different Candida species (C. albicans, C. glabrata, and C. krusei) silver nanoparticles and cobalt (II) hydroxide nanomaterials showed strong antifungal activity at 50 μg/mL with minimum inhibitory concentration (MIC) values. After light exposition, MIC values for nanomaterials decreased (to 12.5 μg/mL) for C. krusei and increased (100 μg/mL) for C. albicans and C. glabrata.
Collapse
Affiliation(s)
- Agnieszka Sidorowicz
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Piazza d’Armi, Cagliari, Italy
| | | | - Giacomo Fais
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Piazza d’Armi, Cagliari, Italy
| | - Antonella Pantaleo
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Alessia Manca
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Alessandro Concas
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Piazza d’Armi, Cagliari, Italy
| | - Paola Rappelli
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
- Mediterranean Center for Disease Control, Sassari, Italy
| | - Pier Luigi Fiori
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
- Mediterranean Center for Disease Control, Sassari, Italy
- * E-mail: (PLF); (GC)
| | - Giacomo Cao
- Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Cagliari, Italy
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Piazza d’Armi, Cagliari, Italy
- * E-mail: (PLF); (GC)
| |
Collapse
|
5
|
Sidorowicz A, Szymański T, Rybka JD. Photodegradation of Biohazardous Dye Brilliant Blue R Using Organometallic Silver Nanoparticles Synthesized through a Green Chemistry Method. Biology (Basel) 2021; 10:biology10080784. [PMID: 34440016 PMCID: PMC8389564 DOI: 10.3390/biology10080784] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 11/23/2022]
Abstract
Simple Summary In the paper, we utilize silver nanoparticles as a catalyst in the degradation of a hazardous dye. The nanoparticles are formed from the simple silver salt by using only a plant extract from a commonly occurring herb. The plant extract contains compounds that can both reduce the silver salt and subsequently cap the surface of the as-prepared particles. There are many environmental advantages to using such an approach—nanoparticles are prepared by using simple green chemistry and the catalytic degradation of dye is carried out by sunlight energy. Such a method can be used as a very cheap, green method to neutralize hazardous substances in-house. Abstract Nowadays, nanostructures having tremendous chemical and physical properties are gaining attention in the biomedical industry. However, when they are prepared through classical methods (physical and chemical), they are often non-biocompatible and toxic. Considering the mentioned factors, in this research, organometallic silver nanostructures (OMAgNs) have been prepared by the green chemistry method using the acetone, methanol, and methanol-hexane-based extracts of the medicinally important plant Cichorium intybus. Secondary metabolites from C. intybus can be used as an alternative to synthetic reagents at an industrial scale to manufacture biosafe and economical nanostructures with enhanced physicochemical parameters. Prepared nanostructures were characterized using SEM, XRD, FTIR, TGA, UV, and zeta potential measurement. SEM analysis revealed different shapes of OMAgNs, prepared with various extracts. XRD analysis showed the crystallinity of the nanostructures. FTIR spectroscopy helped to identify groups of compounds present in the extracts and used for the OMAgNs synthesis. Out of the three tested OMAgNs, those prepared with methanol extract were selected due to the highest obtained yield and stability (highest negative zeta potential) and were tested as a cost-efficient and active agent to photodegrade organic pollutant, Brilliant Blue R, using energy from sunlight. A decrease in UV-VIS absorbance confirmed the rapid degradation of the dye.
Collapse
Affiliation(s)
- Agnieszka Sidorowicz
- Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10 Street, 61-614 Poznan, Poland; (A.S.); (T.S.)
- Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6 Street, 61-614 Poznan, Poland
| | - Tomasz Szymański
- Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10 Street, 61-614 Poznan, Poland; (A.S.); (T.S.)
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8 Street, 61-614 Poznan, Poland
| | - Jakub Dalibor Rybka
- Center for Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10 Street, 61-614 Poznan, Poland; (A.S.); (T.S.)
- Correspondence: ; Tel.: +48-61-829-1875
| |
Collapse
|
6
|
Nooitgedagt A, Koppeschaar HP, de Vries WR, Sidorowicz A, Klok LJ, Dieguez C, Mallo F. Influence of endogenous cholinergic tone and growth hormone-releasing peptide-6 on exercise induced growth hormone release. Clin Endocrinol (Oxf) 1997; 46:195-202. [PMID: 9135702 DOI: 10.1046/j.1365-2265.1997.1080919.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The neuroendocrine mechanisms of exercise-induced GH release remain incompletely understood. In this study we have investigated the influence of endogenous cholinergic tone and growth hormone-releasing peptide-6 (GHRP-6) on exercise induced GH release. DESIGN Analysis of responses of serum GH to administration of pyridostigmine (PD, 120 mg, orally) or GHRP-6 (100 micrograms, i.v.), to exercise alone, and to the combinations of PD plus exercise or GHRP-6 plus exercise. An indirect estimation of the secretory pattern of GH was calculated by the deconvolution technique. Exercise was performed on a bicycle ergometer with a 20-minute workload near the individual lactate threshold of 4 mmol/l. The five tests were performed in random order after an overnight fast, and at least 3 days apart. SUBJECTS Eleven healthy, non-obese male subjects (age 23.9 +/- 0.3 years, body mass index 23 +/- 0.7 kg/m2, VO2 max: 52.4 +/- 2.0 ml/min/kg body weight; mean +/- SEM) participated in this study. MEASUREMENTS Serial blood samples from an indwelling catheter were taken before, during and after exercise for analysis of GH (IRMA), lactate (YSI 2300) and haematocrit (micromethod). RESULTS Irrespective of the tests, peak values of GH were found between the 18th and 26th minute. The secretory pattern showed differences between the tests. Exercise alone induced relatively short lasting peaks of medium amplitude, whereas PD induced long lasting peaks with low amplitudes. PD plus exercise showed additive effects on the amplitude of GH peaks. GHRP-6 induced long lasting peaks with high amplitude, and GHRP-6 plus exercise also had additive effects on the amplitude. CONCLUSIONS The increase in frequency and amplitude of GH peaks, which occurred during the GHRP-6 plus exercise, indicates that exercise-induced GH release is not mediated through an increment in the release of an endogenous GHRP-6-like ligand, favouring the possibility that exercise-induced GH release is mediated through an increase in endogenous GHRH release.
Collapse
Affiliation(s)
- A Nooitgedagt
- Department of Medical Physiology, University Hospital Utrecht, Utrecht University, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
7
|
Abstract
In recent years perimenopausal obesity has attracted much attention, because it affects as many as 60% of women of menopausal age. The severe clinical implications of obesity directed our efforts to establish etiological factors and possible ways of treatment. It is clear that there are numerous conditions that underly perimenopausal obesity. Among these, genetic factors, neuropeptides, adrenergic nervous system activity and hormones play a role. Reproductive hormones are also an important factor, but their influence on adipose tissue is only indirect because there are no receptors for sex steroids in fatty tissue. Reports of hormone replacement therapy in women of postmenopausal age have come to different conclusions, so its influence on the etiology of perimenopausal obesity cannot be completely excluded. However, the potential benefit of this kind of treatment in female patients at menopausal age must always be considered.
Collapse
Affiliation(s)
- A Milewicz
- Department of Endocrinology, Medical University of Wrocław, Poland
| | | | | |
Collapse
|
8
|
Kwiatkowska D, Modrzycka T, Sidorowicz A. Inhibition of fructose diphosphate aldolase by phosphatidylserine liposomes. Gen Physiol Biophys 1994; 13:425-31. [PMID: 7797050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- D Kwiatkowska
- Department of Biochemistry, Academy of Medicine, Wrocław, Poland
| | | | | |
Collapse
|
9
|
Sidorowicz A, Modrzycka T, Gołebiowska J, Siemieniewski H. Effect of NAD coenzyme on the inactivation of glyceraldehyde-3-phosphate dehydrogenase by anionic phospholipids. FEBS Lett 1990; 266:175-7. [PMID: 2365066 DOI: 10.1016/0014-5793(90)81533-t] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The inactivation of bovine heart glyceraldehyde-3-phosphate dehydrogenase by phosphatidylinositol (PI) and phosphatidylserine (PS) in the form of liposomes was investigated in the presence and absence of NAD excess. In the absence of NAD, the enzyme activity decreased to about 50% of its initial value at 0.6 mM PI and 0.8 mM PS (lipid-to-protein molar ratio 600 and 800, respectively). In the same lipid concentration range almost full regainment of the activity was observed in the presence of 80 microM NAD. It was shown that the excess of NAD protects the enzyme against conformational change induced by the phospholipids. Centrifugation experiments showed that both PI and PS bind significant amounts of NAD.
Collapse
Affiliation(s)
- A Sidorowicz
- Department of Biophysics, Medical School, Wrocław, Poland
| | | | | | | |
Collapse
|
10
|
Sidorowicz A, Gołebiowska J, Siemieniewski H. Interaction of phosphoglycerate kinase with phosphatidylserine liposomes. Gen Physiol Biophys 1986; 5:307-13. [PMID: 3758664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The interaction of 3-phosphoglycerate kinase from bovine heart with natural phosphatidylserine (I) and synthetic dipalmitoyl phosphatidylserine (II) in form of liposomes was investigated by measuring fluorescence and activity of the enzyme. The addition of increasing amounts of I resulted in progressive quenching of protein fluorescence with no shift in the emission maximum. In contrast, II did not cause any change in the fluorescence. In the presence of low amounts of I and II (lipid/protein molar ratio 10-40) full enzymatic activity of 3-phosphoglycerate kinase was observed even after 80 min of incubation, whereas without phospholipids the activity considerably decreased. At higher lipid concentrations I strongly inactivated the enzyme and the inactivation by II was only insignificant. It was concluded that the phospholipid membrane protects the enzyme against thermal denaturation, whereas the inactivation is mainly due to phospholipid impurities.
Collapse
|
11
|
Krawczyk E, Broda K, Sidorowicz A, Gołebiowska J, Siemieniewski H, Banaś T. Comparative study of the structure of glyceraldehyde-3-phosphate dehydrogenase from bovine heart muscle. Comp Biochem Physiol B 1986; 85:811-8. [PMID: 3816156 DOI: 10.1016/0305-0491(86)90180-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Glyceraldehyde-3-phosphate dehydrogenase with a specific activity of 153 units/mg protein was isolated from bovine heart muscle. Its relative molecular mass was found to be 144,000. The tryptic peptide map and amino acid analysis were obtained. The N-terminal sequence was established as Val-Lys-Val-Gly-Val-Asn-Gly-... and C-terminal as ...-Ala-Ser-Lys-Glu. Fluorescence and optimal rotation dispersion measurements were performed. The data were compared with other glyceraldehyde-3-phosphate dehydrogenases.
Collapse
|
12
|
Medoń P, Tlatlik-Nowak U, Sidorowicz A. Growth rate of the bacterium Sphaerotilus natans in lead-containing medium and the effect of calcium ions. Environ Res 1984; 35:228-236. [PMID: 6489292 DOI: 10.1016/0013-9351(84)90131-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Growth rate of bacteria Sphaerotilus natans in lead-containing medium (1 X 10(-4) M Pb2+) and bioaccumulation of lead in the bacterial cells were investigated together with the effect of calcium ions on these processes. A rapid increase in biomass was observed in the presence of calcium and lead whereas calcium alone had no visible effect on the bacterial growth. The increase in biomass in the presence of lead and calcium was accompanied by a pronounced drop in lead content in the bacterial cells. This suggests that calcium ions protect the bacterial cells against lead poisoning.
Collapse
|
13
|
Abstract
A method and an apparatus have been developed for the determination of the susceptibility of pathogenic bacteria to antibiotics. The method has the same applicability as the accepted Bauer-Kirby method. The method is rapid, the procedure for the performance of the test is simple, the supplies and equipment for the performance of the test are inexpensive and finally the test gives easily measurable end-points. The correlation of the method to the accepted Bauer-Kirby method against clinical isolates of gram-positive bacteria was 90-100% for the antibiotics tested with the exception of neomycin which was 80%. With gram-negative bacteria, the correlation was 92-100% for the antibiotics tested.
Collapse
|
14
|
Lin KS, Park MK, Baker HA, Sidorowicz A. Disinfection of anesthesia and respiratory therapy equipment with acid glutaraldehyde solution. Respir Care 1979; 24:321-7. [PMID: 10315053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The dilution of acid glutaraldehyde solution and its effect on microbiological effectiveness were investigated using Sonacide and the Cidematic Decontamination System under normal use conditons at 18 hospitals over a 4-week period. The dilution of Sonacide was found to follow first-order kinetics and is described by the equation, ln C = ln Co-KT, where K is the apparent dilution-rate constant. The average dilution-rate constant under normal use conditions was 0.015/day. It takes an average of 47 days under normal hospital-use conditions to reduce its potency to half its original strength. The average glutaraldehyde concentration after 28 days' use was found to be approximately 66% of the initial concentration. The AOAC use-dilution test was employed to evaluate the microbiological effectiveness of the Sonacide samples collected weekly for four weeks. Results showed that all the Sonacide samples from 18 hospitals passed the AOAC use-dilution test for Pseudomonas aeruginosa (ATCC 15442). Based on this study, it is apparent that Sonacide can be used to disinfect various anesthesia and respiratory therapy equipment for up to 4 weeks in the Cidematic machine.
Collapse
|
15
|
Baker H, Sidorowicz A, Sehgal SN, Vézina C. Rapamycin (AY-22,989), a new antifungal antibiotic. III. In vitro and in vivo evaluation. J Antibiot (Tokyo) 1978; 31:539-45. [PMID: 28309 DOI: 10.7164/antibiotics.31.539] [Citation(s) in RCA: 111] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The activity of rapamycin, a new anti-Candida antibiotic, was not affected by pH values between 6 and 8; at pH 4, however, activity was abolished. The MIC of rapamycin did not vary drastically with the size of inoculum: a ten-fold dilution of the inoculum reduced the MIC only two-fold. Serum binding was extensive. Serum levels obtained in mice were higher on subcutaneous injection than with oral administration. Dogs absorbed rapamycin after oral administration. Rapamycin cured systemic candidosis in mice: PD50 s.c. was 9.5 mg/kg: PD50 p.o. was 11 mg/kg. In the same experimental infections amphotericin B and nystatin exhibited PD50 values of less than 0.25 mg and greater than 4,000 units/kg respectively. Rapamycin and amphotericin B, administered at 1, 4 and 24 hours after infection, gave approximately the same percent survival after 30 days of observation. When the above treatment was extended by an additional daily treatment for 6 days, rapamycin by the subcutaneous route yielded a higher percentage of survival than either rapamycin or amphotericin B, administered orally, after a 30-day observation period. Vaginal candidosis in female rats was treated efficiently (91% cure) by rapamycin administered orally. No increase of resistance of C. albicans was observed during treatment.
Collapse
|
16
|
Sidorowicz A, Firko M, Sidorowicz S. [Depressive symptoms in patients in a hospital department of internal diseases]. Pol Tyg Lek 1977; 32:1237-9. [PMID: 896581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
17
|
Sidorowicz A, Szubiński Z. [Premature children in a rural population of the Sierpc County in the years 1968-1972]. Pediatr Pol 1976; 51:1493-500. [PMID: 1004963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
18
|
Kluepfel D, Baker HA, Piattoni G, Sehgal SN, Sidorowicz A, Singh K, Vézina C. Naphthyridinomycin, a new broad-spectrum antibiotic. J Antibiot (Tokyo) 1975; 28:497-502. [PMID: 807549 DOI: 10.7164/antibiotics.28.497] [Citation(s) in RCA: 46] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new antibiotic, naphthyridinomycin, was isolated in crystalline form from the culture filtrate of Streptomyces lusitanus AY B-1026. The antibiotic is active against a large number of both gram-positive and gram-negative bacteria, and inactive against Candida albicans, Trichophyton granulosum and Microsporum gypseum. The antibiotic is toxic in mice.
Collapse
|